http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/135 Tue, 05 May 2026 05:55:34 GMT 2026-05-05T05:55:34Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/13520 Title: Farmstead Infrastructures Authors: Alabadan, B. A.; Adesiji, Adeolu Richard; Adeoye, Aderemi Peter; Ojutiku, P. A.; Amadi, A. A.; Aguwa, J. I. Tue, 01 Jan 2008 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/13520 2008-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/12716 Title: Groundwater Recharge Estimation and Trend Analysis Using Hydrological and Soil Moisture Balance Models in Semi-arid Region Authors: ADESIJI, A.R.; JIMOH, O.D.; ADEOYE, P.A.; JIMOH, I.O; GBADEBO, O.A.; SAIDU, M. Abstract: Groundwater recharge estimation becomes very important, particularly in a cultivated land mass owing to the roles played by groundwater in the area of agricultural productivity. This paper presents the estimation and trend analysis of groundwater recharge in Kwadna basin using modified soil moisture balance model between the years 1996 and 2016. A single layer soil water balance model coupled with hydrological models was used in the recharge estimation while statistical techniques were used in groundwater recharge trend analysis. The meteorological data used in the models were obtained from Nigeria Meteorological Agency, Minna for the entire study period. Potential evapotranspiration (ETp) on daily basis was also estimated using Hargreaves evapotranspiration equation. Soil properties like moisture content at both field capacity and wilting point, near surface storage, soil moisture deficit, and crop properties like crop rooting depth and crop growth stages were obtained from the past studies and information gathered from the farmers in the study area. The results showed that annual groundwater recharge varied from 156 mm in 2004 to 731 mm in 2012 which correlated positively with rainfall. The soil moisture balance model results indicated sufficient soil moisture for crops’ use during the period of June to September each year when SMD<TAW. The groundwater recharge trend analysis recorded an increasing trend with statistical significance in the two statistical tests used. Thus, the higher groundwater recharge and its increase in trend observed was attributed to higher rainfall depth recorded within the study period in the study area. Fri, 01 Jan 2016 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/12716 2016-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/12714 Title: Influence of Oil Palm Plantation Age and Hydrology on Dissolved Organic Carbon Concentration of Malaysian Tropical Peatland Water Resources Authors: ADESIJI, A.R.; THAMER, M.A.; NIK DAUD, N.N; SAARI, M.; SAYOK, A.; PADFIELD, R.; EVERS, S.; JIMOH, I.O; GBADEBO, A.O Abstract: Due to boom recorded globally in oil palm industries, many palm oil producing countries like Malaysia and Indonesia converted the sizeable parts of their carbon-rich previously stable peat swamp forests to oil palm plantation. This conversion resulted in huge loss of the soil carbon in dissolved and gaseous forms to atmospheric body and nearby streams. This paper thus focuses on assessing the influence of oil palm plantation age and hydrological factors on dissolved organic carbon concentration in the tropical peatlands. Four different plantations were considered with different years of peat swamp forest conversion ranging from 2000, 2002, 2006 and 2010. The plantation tagged 2010 was first cleared in 1978 and hereby referred to as 2010/1978 in this study. Two tube wells were installed in each of the plantations for monitoring DOC concentration of groundwater between September 2013 and December, 2014. The results showed positive influence of heavy storm events on DOC concentrations and that the lowest DOC concentration ranging from 18.10 mg/L to 28.60mg/L was observed at 2010/1978 plantation as against the highest DOC concentration of range 169.2 mg/L to 250.50 mg/L at 2000 plantation. The results therefore justify the influence of age of plantation as 1978/2010 plantation recorded the lowest DOC concentration as against the 2000 plantation recording the highest DOC concentration. It is thus recommended that oil palm cultivation on peatlands should be avoided as this practice, if not well-managed, leads to flux and emission of stored soil carbon in both dissolved and gaseous forms to the surrounding water resources and atmospheric body. Fri, 01 Jan 2016 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/12714 2016-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/12713 Title: Predicting Soil Moisture and Soil Temperature In A Tropical Peatland Using Water Table Depth, Surface Temperature And Rainfall Authors: Adesiji, Adeolu Richard; Saidu, Mohammed; Musa, John Jiya Abstract: Degradation of tropical peatland largely depends on water table depth and other soil physical properties like soil moisture and soil temperature. Empirical studies indicate positive relationships between water table depth, soil moisture and soil temperature. This paper aims to further investigate the relationship between soil moisture and soil temperature variability in time as a function of soil depth and their relationship with water table depth. Linear models for prediction of soil moisture and soil temperature at 70 cm using surface soil moisture and soil temperature measurements, rainfall and surface temperature are examined. In all the four plots used in the study, seasonality of soil moisture and soil temperature was confirmed as they strongly correlate with rainfall. Both soil moisture and soil temperature at 5 cm, as a result of storm events, experienced more fluctuations compared to the values recorded at 70 cm. The linear models give better prediction capabilities as predicted and observed values give good fits and coefficients of determination, R2, is mostly above 0.5 with agreements within 0.05 – 0.1. Sun, 01 Jan 2017 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/12713 2017-01-01T00:00:00Z